Tire carrying and changing rack



Y D. H. KUHNLE TIRE CARRYING AND CHANGING RACK Fild Dec. 9. 1924INVENTOR. mwa/fz/HNL E A TiTORNEYS.

Patented Nov.- 23, 1926.

UNIT-ED STATES'A PATENT oFFlcE.. i

' DANIEL H. KUHNLE, OF SAN FRAN CISCO, CALIFORNIA.

rmi: CARRYING AND CHANGING RACK.

Application mea 'December e. 1924.` serialNo. 754.821

which will'appear as the description proceeds are` realized in the tirerack construction shown in the accompanying drawings, and in which yy iFigure 1 is a plan view of my rack with a tire and rim held firmly inplace.

Figure 2 is a vertical section of Figure 1 taken along the line 2-2thereof, and

Figure 3 is a similar section illustrating the rack in the act ofcontracting a split rim for the removal of a tire therefrom.

Figures 4 and 5 are diagrammatic elevai tions of the actuating disc andits coacting rim engaging bar.

In etail the rack comprises a circular bodyor bracket housing 1 havingxvthree radial arms 2, 2.and 2 arranged t ereon for enga 'ng the innerdiameter of a rim 3 upon whic a tire 4 is mounted.

The arms have each a curved shoe 5 at their outer ends adapted to engageoutwardly beyond both sides of the center of the rim so that when thearms are radially expanded'v the rim cannot beremoved and each shoe isalso rovided with a'hook 6 for contracting the rim as later described.

The two a ms 2, 2 are each secured rigidl to the body and reinforced bya channell of sheet metal/which embraces the arms and is riveted -to thebody, but the arm 2 is embraced by a wider channel 7 and is free to moveradiallythereunder as well as tof oscillate at its inner end.

-Attached to the center of the body is a hub 8 revolvably su porting ashort shaft 9 having a crank dis 10 at its inner end with a crank pin-11projecting therefrom.

The inner end of arm 2 is reduced in thickness to overlie the disk 10and is provided with a slot 10. through'which the crank pin `11 projectss'aid pin being located eccentrically `so that upon turning the shaftthe crank pinwillcause the arm vto move in and out .substantially in aradial direction, tho the inner end of the arm will fellow the circularmovementof the crank pin. Means to turn the shaft 9 is provided in theform of a hand `crank 12 havin a hub' 13 forked to loosely" fit theouter en of the shaft and transversely pinned thereto at 14, while atthe outer end the hand crank is slotted at 15 to form a hasp to fitovera staple 16 rigidly secured to the channel 7 and adapted to receive a pl padlock to hold the hand crank inoperative.

Owing to the loose fork of the hub 13, the crank may be oscillated onthe shaft while retained by the pivot 14'so as to bringit from angularposition enga ed' with the staple to the dotted position s own inFigv,ure 2 so that it may be used as a lever to turn the shaft.

When the hasp handle is engaged .with the l staple the crank pin is at apoint to carry the arm` 2 to its furthest outward position for expandingand lockin the rim immovably in place as shown in igure 2 and also whenin this position the three hooks are spread open far enough to easil goover the edge ofthe rim when the rim 1s presented to them in theposition shown in full in Figure 3 and upon turning the shaft ahalfrevolution the rim will be contracted to the dot-ted position so thatthe tire may easily be removed or placed on the rim, or in ease' ofFigure 2 the tire and its rim may freely be slipped over the shoesof thearms.

When contracting the rim-the s lit 17 of the rim is brought to eitherside o the movable arm 2 so that the end of the rim will be pulledinwardly to free the tire, and it should-be observed that the two fixedarms are relatively close together at the opposite side of the rim so asto take the react-ance,-

and also when carrying a tire to both prop-` 'erlyT support therim frombelow.

The carrier may be secured to an automo- Abile body or frame in variousways de ending on the position in which it is p aced vand the mannershown in the drawings inarm is extended to disengage the' rim whenvengaged under the bolt heads as shown in changing the tire, the pin ispositioned at the upper end of the slot 10a, as shown in Figure 5.- Atthis time, it follows that the arm 2 can be moved manually in an upwarddirection so that the shoe 5 can be fully released from the rim, thenormal position of the arm being shown in Figure 4. In this normalposition the pin l1 is at the low end of the slot 103. In order toprevent the arm 2 from being thrown over'center when adjusting said arm,I provide stop pins 22 mounted on the plate 18 and arrangedin the pathof movement of said arm.

I claim:

1. In a combined tire carrier `and changer, a bracket, a shaft rotatablysupported in said bracket, a disc secured to said shaft, a pineccentrically secured to said disc, a radially disposed arm slidablysecured in said bracket, said arm having an elongated slot engaging saidpin, whereby, when the pin is atone end of slot, said arm may functionas a tire carrier and when it is at the other end of the slot, the armmay function as a tire remover, a second radial arm, said radial armsbeing adapted to exert outward pressure on a tire rim when said ,armsfunction as a tire carrier, and means on each of said arms adapted toexert opposing inward pressures on ythe'rim when the arms function as atire remover.

2. A combined tire carrier and changer, comprising a stationary bracket,a guiding channel xedly secured to said bracket, a shaft rotatablysupported in said bracket, a disc ixedly secured to said shaft andrevolvably supported in said bracket, radially disposed arms secured tosaid bracket, one of said radially disposed arms being'slidablydisposed' in said guiding channel and having a slot therein, curvedshoes,l each of said shoes being lixedly secured t0 one of said radialarms., hooks, each xedly secured to said shoes and adapted to engage atire rim, a pin eccentrically fastened to said disc and adapted toengage said slot in said arm, the relative position of the slot and thepin determining the distance between the shoe and the center of thebracket.

` DANIEL H. KUI-INLE.

